George Bauer visits some of England's largest-and smallest-flower-filled spaces. Highlights include Grimsthorpe Castle Park and Gardens, a 3,000-acre estate in the rolling hills of Lincolnshire; Chatsworth House, a Baroque palace whose grounds were first landscaped in the 1760s by the famous Capability Brown; and Durham's Crook Hall & Gardens, a small parcel that includes a Shakespeare Garden filled with plants and flowers from the Bard's time.